Lighting fixture



March 1 1927.

A. DVORAK .LIGHTING FIXTURE Filed May 26, 1924 Patented Mar. 1 1927. uurrsn STATES ANTON DVORAK, F BERWYN, ILLINOIS,

ASSIGNOR TO 7 BEARDSLEE CHANDELIER MANUFACTURING COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF DELA- WARE.

LIGHTING Application filed May 2a My invention relates more particularly to a supporting member or'loop whereby .the

glass holding shell and the lamp holding socket member are held in place and the a assembled elements suspended from the supporting chain or rod'of the fixture.

My lnvention has for its object the provision of a construction whereby the porcelain receptacle or lamp holding socket with In the glass holding shell will be properly secured in place and suspended at various points from the supporting rod or chain which secures the fixture to the wall bracket or ceiling plate; a construction whereby all possibility of the lamp holding socket member becoming loosened when the bulb is being screwed out of the socket will be prevented; and a two point suspension for the lamp bulbs and shades provided and a more easy balance of the fixture obtained.

The above enumerated objects and the advantages inherent in the invention will all be more readily comprehended from the detailed description of the accompanying drawing, wherein: I V

Figure 1 is an elevation of a portion of a lighting fixture with my invention.

Figure 2 is an enlarged sectional view of my improved means and the glass holding shell and lamp holding socket member with portions broken away.

My invention consists more particularly in the loop or supporting member shown at 10 which consists of the body or loop portion 11 adapted to receive the ring or link of a chain as indicated at 12; or other suitable suspending member whereby the fixture is suspended from the wall bracket or from the ceiling. The member also consists of the main somewhat elongated base port-ion 13 which is preferably substantially flat throughout the major portion of the lower surface and apertured centrally at 14 for the passage of the electric wires 15. The base 'portion 13 is shown as preferably extending slightly beyond the sides of the loop portion 11; and each of the extended portions or arms 16, 16 is provided with a tapped opening on the lower side or bottom to receive a screw 17. The bottom surface of the base portion 13 is preferably provided with a boss 18 disposed about the opening 14, adapted to pass through a central opening in the shade holding shell 19 which assists in the proper positioning or assembly of the FIXTURE.

1924. Serial No. 715,845.

various elements; and this boss also acts as a bushing through the thin walls of the shell 19 and prevents cutting of the insulation on the wires. Theshade holding shell 19 may be of the usual and well known construction employed, with the skirt portion thereof provlded with any suitable fastening means, as for example thethumb-screws 20 whereby the glassware 21 is removably secured in place.

The screws 17 are of length suflicient to not only pass through the top of the shell 19 and into the tapped openings in the bottom of the member 10, but these screws are also intended to secure the porcelain socket member 22 in place. With my invention, the porcelain member 22 may be of the type more generally known as a receptacle which is provided with a central opening for the free passage I of the electric wires 15, as shown in Figure 2; and adapted to receive the bulb 23 in the usual manner. in Figure 2, the porcelain member 22 is cut away or undercut at the sides as shown at 24, with the base portion at these points apertured for the passage of the screws, the undercutportlons 24 enabling the screws to be put 1nto place and screwed into the tapped openings in the lower side of loop member 10, thereby causing the porcelain member to firmly clamp the shell 19 against the under side of loop member 10.

My invention, aside from providing a two point suspension for the glass holding shell 19-which is of great importance especially where large bowls or shades are employed enables the fixture to be more readily balanced. With the suspending means providing a multiple of attaching points, namely a two-point suspension in the particular exemplification, the difiiculty heretofore encountered with suspended fixture of the type in question due to the backing off or unscrewing of the socket member, either through vibration or repeated removals and replacings of the bulb, is entirely eliminated.

In fixtures as heretofore employed, the supporting member was usually provided with an externally threaded nipple, arranged centrally for the passage of the electric wires. The bulb or lamp holding socket member was provided with a threaded socket to per-. mit the socket member to screw onto the threaded nipple of the supporting member of the fixture, with the shell held between the As shown socket member and the supporting member, so that the shell with the attached bowl or shade, as well as the lamp or bulb in the socket member were all merely supported through the single connection between the supporting member and the socket member,

namely by means of the socket 'member" screwing (into the threaded nipple. In practice, with fixtures of this type, it has been yfounch -either through vibration or through become damaged and broken.

NVi th my improved construction, the dith- -oulty and danger above-referred to are en- :tirely eliminated and prevented, as the unscrewing ofthebulb from the socket member can in no way distuibthe fastening ele- :ments nor in any waywaifect theseeure'relation'between'the receptacle or bulb holding m'ember, theglassware holding shell and the supporting "member or "loop. Furthermore, with my invention, the shade holding shell, which usually is :of comparatively thin sheet ,n'ietal,:.rests on the -'entirebase of the recep- .tacle, :thus receiving support -substantially throughout the top of theshell instead of merely at the central openingas isthe case with constructions as heretofore employed and hereinbefore referredto. At thesame time, my invention permits an easy balance I of the l fixture to 'be obtained; "the invention being of simple construction and one which may be easily andquickly put into place;

vand l have described the invention in terms which are employed tinerely as terms of description and not as terms of limitation, as "structural modifications are possible and may be made without, however, departing from the spirit of my invention.

lVhat'Ivclaim is: r

In a lighting fixture, a supporting member provided at top with a loop p'ortionto receive a suspending element, thebase of the memberfbeing centrally provided with an apertured boss on the lower face for the passage of electric wires, said base being extended on opposite sides ofthe central opening with a fiat bottom face having a member, whereby a plurality of independentsuspension points on opposite-sides of the median line of the supporting member are provlded.

' ANTON .DVURAK. 

